In a playful, surprising and thought-provoking portrait of our time on earth, National Geographic demonstrates, in a series of remarkable visuals, what makes up an average human life today and how everything we do has impact on the world around us. In this unique journey through life, it shows all the people you will ever know, how much waste you will produce, the amount of fuel you'll consume and how much you've got to pack in during your 2,475,526,000 seconds on earth.

Human Footprint

Le Tour du monde en 90 minutes

Julia Bradbury heads for Iceland to embark on the toughest walk of her life. Her challenge is to walk the 60 kilometres of Iceland's most famous hiking route, a trail that just happens to end at the unpronounceable volcano that brought air traffic across Europe to a standstill in 2010 . With the help of Icelandic mountain guide Hanna, Julia faces daunting mountain climbs, red hot lava fields, freezing river crossings, deadly clouds of sulphuric gas, swirling ash deserts and sinister Nordic ghost stories as she attempts to reach the huge volcanic crater at the centre of the Eyjafjallajökull glacier.

Julia Bradbury's Iceland Walk

Welsh poet Ifor Ap Glyn has a passionate interest in the toilet: its history and how it has evolved over the centuries, right up to the development of the current design. Here, he explains the reasons behind his fascination.